Uma espira circular tem raio 2cm e é atravessada por uma corrente de 0,5A, no sentido horário. Sendo µ0 = 4π.10-7Tm/A, caracterize o campo magnétic...

Para caracterizar o campo magnético no centro da espira, podemos usar a fórmula do campo magnético no centro de uma espira circular, que é dada por: \[ B = \frac{{\mu_0 \cdot I \cdot R^2}}{{2 \cdot (R^2 + x^2)^{3/2}}} \] Onde: - \( B \) é o campo magnético no centro da espira, - \( \mu_0 \) é a permeabilidade magnética do vácuo (4π x 10^-7 Tm/A), - \( I \) é a corrente elétrica (0,5 A), - \( R \) é o raio da espira (2 cm = 0,02 m), - \( x \) é a distância do centro da espira. Substituindo os valores dados na fórmula, temos: \[ B = \frac{{4\pi \times 10^{-7} \times 0,5 \times (0,02)^2}}{{2 \times ((0,02)^2 + 0^2)^{3/2}}} \] \[ B = \frac{{4\pi \times 10^{-7} \times 0,5 \times 0,0004}}{{2 \times (0,0004)^{3/2}} \] \[ B = \frac{{2\pi \times 10^{-10}}}{{2 \times 0,0004}} \] \[ B = \frac{{\pi \times 10^{-10}}}{{0,0004}} \] \[ B = \frac{{\pi \times 10^{-10}}}{{4 \times 10^{-4}}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] \[ B = \frac{{\pi}}{{4} \times 10^{-6}} \] 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